<div id="backtotop" style="display: none; top: 502px; right: 0px;"><i class="glyphicon glyphicon-plane"></i>回到顶部</div>
<!-- <div id="goto-top" class="goto-top">
    <i class="glyphicon glyphicon-plane"></i>
</div> -->
<script type="text/javascript">
    $(document).ready(function() {
        function t() {
            n.css({
                top: o,
                right: 0
            })
        }
        var n = $("#backtotop"),
                o = $(window).height() - n.height() - 200;
        n.click(function() {
            return $("html,body").animate({
                scrollTop: 0
            }),
            !1
        }),
        $(window).scroll(function() {
            var t = $(window).scrollTop();
            t > 150 ? n.fadeIn() : n.fadeOut()
        }),
        t(),
        $(window).resize(t);
            });
</script>
<div class="footer">
      <p>点通科技故障申报系统</p>
      <p>
        <a href="#">回到顶部</a>
      </p>
</div>